#Question id: 11077
#Unit 7. System Physiology – Animal
A person’s normal tidal volume is 400 ml with a dead space of 100 ml. The respiratory rate is 12 breaths/min. The person is placed on ventilator for surgery and the tidal volume is 700 with a rate of 12. What is the approximate alveolar Pco2 for this person?
#Question id: 11078
#Unit 7. System Physiology – Animal
A child has been eating round candies approximately 1
and 1.5 cm in diameter and inhaled one down his airway blocking his left
bronchiole. Which of the following will describe the changes that occur?
#Question id: 11079
#Unit 7. System Physiology – Animal
The diffusing capacity of a gas is the volume of gas that will diffuse through a membrane each minute for a pressure difference of 1 mm Hg. Which of the following gases is often used to estimate the oxygen diffusing capacity of the lungs?
#Question id: 11080
#Unit 7. System Physiology – Animal
The O2-CO2 diagram here shows a ventilation-perfusion
ratio line for the normal lung. Which of the following best describes the
effect of decreasing ventilation-perfusion ratio on the alveolar Po2 and Pco2?
#Question id: 11081
#Unit 7. System Physiology – Animal
In which of the following conditions is alveolar Po2 increased and alveolar Pco2 decreased?
#Question id: 11082
#Unit 7. System Physiology – Animal
A 67-year-old man has a solid tumor that pushes
against an airway partially obstructing air flow to the distal alveoli. Which
point on the ventilation-perfusion line of the O2-CO2 diagram corresponds to
the alveolar gas of these distal alveoli?
